19-16 19-16 Electrical System Troubleshooting B Connector contact defect Inspection 11: O 2 sensor voltage inspection ANL.:I/O ENGINE CTRL 9/10 OK NG Engine controller defect Inspection 12: O 2 sensor voltage inspection ANL.:I/O ENGINE CTRL 9/10 NG OK O 2 sensor defect Inspection 1: Inspect for air suction. Start the engine and check whether air is being sucked in from the engine oil level gauge, oil filler cap, or PCV hose etc. Standard: There is no air being sucked in. Check if there is air being sucked in from the intake system parts and connections between the air cleaner and the cylinder head. Standard: There is no air being sucked in. Inspection 2: Inspect for exhaust gas leakage.
Start the engine and check if there is any exhaust gas leakage from the exhaust system parts and connections between the cylinder head and the catalytic muffler. Standard: There is no exhaust gas leakage. Inspection 3: Inspect for fuel leakage. Start the engine and check if there is any fuel leakage from the fuel system parts and connections between the fuel pump and the injectors. Standard: There is no fuel leakage. Inspection 4: Inspect the fuel pressure. For the fuel pressure inspection, refer to the repair manual for the 4Y engine. Inspection 5: Carry out a spark plug individual inspection. For the spark plug individual inspection, refer to the repair manual for the 4Y engine.
Inspection 6: Carry out an injector individual inspection. For the individual injector inspection, refer to the repair manual for the 4Y engine. Section 19